Randomization The Zelen randomization will be used for this study (26-28). In each participating hospital, a member of the research team will screen each adolescent suicide attempters and when the adolescent suicide attempter will meet the eligibility criteria, his/her group for the study will be defined by a randomization. This patient will benefit of the usual care with additional SMS (group MEDIA) or of the usual care (group CLASSIC). Then, this member of the research will inform the adolescent 'psychiatrist who will present to the patient and his/her parents the design of the study, only for the group of the patient. The psychiatrist will also give information about the study and will gather an "informed consent".